<script setup>
import { ref } from 'vue'
import { Plus, Upload } from '@element-plus/icons-vue'
import { useUserStore } from '@/stores'

const userStore = useUserStore()
const uploadRef = ref()
const imgUrl = ref(userStore.user.avatar)
const onUploadFile = (file) => {
  //基于FileReader 读取图片做预览  base64字符串
  const reader = new FileReader()
  reader.readAsDataURL(file.raw)
  reader.onload = () => {
    imgUrl.value = reader.result //也可以预览 头像
  }
  // imgUrl.value = URL.createObjectURL(file.raw) //进行预览
  // console.log(file.raw)
}
const setUser = () => {
  userStore.user.avatar = imgUrl.value
  userStore.setUser(userStore.user).then((code) => {
    if (code === true) {
      ElMessage.success('成功')
    } else {
      ElMessage.error('失败')
    }
  })
}
</script>

<template>
  <el-card style="height: 100%">
    <page-container title="更换头像">
      <el-row>
        <el-col :span="12">
          <el-upload
            ref="uploadRef"
            class="avatar-uploader"
            :auto-upload="false"
            :show-file-list="false"
            :on-change="onUploadFile"
          >
            <img v-if="imgUrl" :src="imgUrl" class="avatar" />
            <img v-else src="@/assets/avatar.jpg" width="278" />
          </el-upload>
          <br />
          <el-button
            @click="uploadRef.$el.querySelector('input').click()"
            type="primary"
            :icon="Plus"
            size="large"
          >
            选择图片
          </el-button>
          <el-button
            @click="setUser()"
            type="success"
            :icon="Upload"
            size="large"
          >
            上传头像
          </el-button>
        </el-col>
      </el-row>
    </page-container>
  </el-card>
</template>

<style lang="scss" scoped>
.avatar-uploader {
  :deep() {
    .avatar {
      width: 278px;
      height: 278px;
      display: block;
    }
    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }
    .el-upload:hover {
      border-color: var(--el-color-primary);
    }
    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 278px;
      height: 278px;
      text-align: center;
    }
  }
}
</style>
